Why is Trump becoming more untrumpish and anti-trump prople becoming more trumpish ?

Take the throne to act, and the throne acts upon you. It's why we rarely get what was promised from leaders after they gain power. Trump is regarded as unpredictable, but the presidency will change him, probably for the better since I can't see him getting much worse.

He won so he's happy. People who didn't get what they wanted are throwing their tantrums now.